LT1492/LT1493
5MHz, 3V/µs, Low Power
Single Supply, Dual and Quad
Precision Op Amps
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTION
The LT
®
1492/LT1493 are dual/quad, low power, single sup-
ply precision op amps with 5MHz gain-bandwidth product,
3V/µs slew rate and only 450µA of quiescent supply current
per amplifier.
With a maximum input offset voltage of only 180µV, the
LT1492/LT1493 eliminate trims in most systems while pro-
viding high frequency performance not usually found in low
power single supply amplifiers.
The LT1492/LT1493 will operate on any supply greater than
2.5V and less than 36V total, and are specified on single 3.3V,
single 5V and
±15V
supplies. Even with their low quiescent
supply current the minimum output drive is 20mA, ideal for
driving low impedance loads.
The inputs can be driven beyond the supplies without
damage or phase reversal of the output. The low operating
voltage and wide input and output range make the LT1492/
LT1493 amplifiers ideal for battery-powered applications.
For applications requiring faster precision single supply
amplifiers, see the 14MHz, 7V/µs LT1211/LT1212, the
28MHz, 12V/µs LT1213/LT1214 or the 23MHz, 50V/µs
LT1215/LT1216.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
s
s
s
Gain-Bandwidth Product: 5MHz Typ
Slew Rate: 3V/µs Typ
Low Supply Current per Amplifier: 0.55mA Max
Input Offset Voltage: 180µV Max
Input Offset Voltage Drift: 3µV/°C Max
Input Offset Current: 20nA Max
Input Bias Current: 100nA Max
Open-Loop Gain: 1500V/mV Min (V
S
=
±15V)
Low Input Noise Voltage: 16.5nV/√Hz
Low Input Noise Current: 0.14pA/√Hz
Large Output Drive Current: 20mA Min
Single Supply Operation
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
Wide Supply Voltage Range: 2.5V to 36V
Specified on 3.3V, 5V and
±15V
Dual in 8-Pin PDIP and SO Package
Quad in a Narrow 16-Pin SO Package
APPLICATIONS
s
s
s
s
Battery-Powered Systems
Portable Instrumentation
Active Filters
Photodiode Amplifiers
DAC Current to Voltage Amplifiers
TYPICAL APPLICATION
50
Precision AC to DC Converter (Full Wave Rectifier and Filter)
40
PERCENT OF UNITS (%)
4.99k
5V
10k
V
IN
+
1/2 LT1492
15k
10k
–
1/2 LT1492
–
10k
6.49k
+
V
OUT
DC
10µF
+
V
S
= 5V, 0V
< 1% ERROR FROM 100mV TO 1V, f = 1kHz
10% ERROR AT 10mV, f = 1kHz
1% ERROR AT 5kHz, V
IN
= 100mV
RMS
10% ERROR AT 30kHz, V
IN
= 100mV
RMS
1492/93 TA01
U
U
U
Distribution of Offset Voltage
Drift with Temperature
V
S
= 5V, 0V
LT1492 N8, S8 PACKAGES
LT1493 S16 PACKAGE
30
20
10
0
– 2.5 – 2 –1.5 –1 – 0.5 0 0.5 1 1.5 2 2.5
OFFSET VOLTAGE DRIFT WITH TEMPERATURE (µV/°C)
1492/93 G02
1
LT1492/LT1493
ABSOLUTE
MAXIMUM
RATINGS
Total Supply Voltage (V
+
to V
–
) .............................. 36V
Input Current ......................................................
±15mA
Output Short-Circuit Duration (Note 1) ......... Continuous
Operating Temperature Range ................ – 40°C to 85°C
Specified Temperature Range (Note 2) .....– 40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
OUT A
1
A
B
6 –IN B
5 +IN B
8 V
+
7 OUT B
ORDER PART
NUMBER
LT1492CN8
LT1492CS8
–IN A 2
+IN A 3
V
–
4
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
S8 PART MARKING
1492
T
JMAX
= 150°C,
θ
JA
= 130°C/ W (N8)
T
JMAX
= 150°C,
θ
JA
= 190°C/ W (S8)
Consult factory for Industrial and Military grade parts.
5V ELECTRICAL CHARACTERISTICS
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, T
A
= 25°C, unless otherwise noted.
SYMBOL
V
OS
∆V
OS
∆Time
I
OS
I
B
e
n
i
n
PARAMETER
Input Offset Voltage
Long-Term Input Offset Voltage Stability
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Voltage Density
Input Noise Current Density
Input Resistance (Note 3)
Input Capacitance
Input Voltage Range
CMRR
PSRR
Common Mode Rejection Ratio
Power Supply Rejection Ratio
V
CM
= 0V to 3.4V
V
S
= 2.5V to 12.5V
0.1Hz to 10Hz
f
O
= 10Hz
f
O
= 1000Hz
f
O
= 10Hz
f
O
= 1000Hz
Differential Mode
Common Mode
f = 1MHz
3.4
0
86
90
10
CONDITIONS
MIN
TYP
100
0.6
5
50
330
17.3
16.5
0.78
0.14
40
800
10
3.60
–0.25
102
110
20
100
MAX
180
UNITS
µV
µV/Mo
nA
nA
nV
P-P
nV/√Hz
nV/√Hz
pA/√Hz
pA/√Hz
MΩ
MΩ
pF
V
V
dB
dB
2
U
U
W
W W
U
W
TOP VIEW
OUT A
–IN A
+IN A
V
+
+IN B
–IN B
OUT B
NC
1
2
3
4
5
6
7
8
B
C
A
D
16 OUT D
15 –IN D
14 +IN D
13 V
–
12 +IN C
11 –IN C
10 OUT C
9
NC
ORDER PART
NUMBER
LT1493CS
S PACKAGE
16-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 150°C/ W
LT1492/LT1493
5V ELECTRICAL CHARACTERISTICS
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, T
A
= 25°C, unless otherwise noted.
SYMBOL
A
VOL
PARAMETER
Large-Signal Voltage Gain
Maximum Output Voltage Swing
(Note 4)
CONDITIONS
V
O
= 0.05V to 3.7V, R
L
= 2k
Output High, No Load
Output High, I
SOURCE
= 1mA
Output High, I
SOURCE
= 15mA
Output Low, No Load
Output Low, I
SINK
= 1mA
Output Low, I
SINK
= 15mA
I
O
SR
GBW
I
S
Maximum Output Current (Note 8)
Slew Rate
Gain-Bandwidth Product
Supply Current per Amplifier
Minimum Supply Voltage
Full Power Bandwidth
t
r
, t
f
OS
t
PD
t
S
THD
Rise Time, Fall Time
Overshoot
Propagation Delay
Settling Time
Open-Loop Output Resistance
Total Harmonic Distortion
A
V
= 1, V
O
= 2.5V
P-P
A
V
= 1, 10% to 90%, V
O
= 100mV
A
V
= 1, V
O
= 100mV
A
V
= 1, V
O
= 100mV
0.01%, A
V
= 1,
∆V
O
= 2V
I
O
= 0mA, f = 2MHz
A
V
= 1, V
O
= 1V
RMS
, f = 20Hz to 20kHz
A
V
= – 2
f = 100kHz
±20
MIN
175
4.2
4.1
3.0
TYP
350
4.35
4.25
3.15
0.003
0.062
0.362
±60
1.8
4.5
425
2.1
150
100
20
100
2.6
130
0.005
550
2.5
0.006
0.075
0.500
MAX
UNITS
V/mV
V
V
V
V
V
V
mA
V/µs
MHz
µA
V
kHz
ns
%
ns
µs
Ω
%
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, 0°C
≤
T
A
≤
70°C, unless otherwise noted.
SYMBOL
V
OS
V
OS
∆T
I
OS
I
B
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift (Note 3)
Input Offset Current
Input Bias Current
Input Voltage Range
CMRR
PSRR
A
VOL
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
(Note 4)
V
CM
= 0V to 3.4V
V
S
= 2.5V to 12.5V
V
O
= 0.05V to 3.7V, R
L
= 2k
Output High, No Load
Output High, I
SOURCE
= 1mA
Output High, I
SOURCE
= 15mA
Output Low, No Load
Output Low, I
SINK
= 1mA
Output Low, I
SINK
= 15mA
I
S
Supply Current per Amplifier
CONDITIONS
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
MIN
TYP
120
1
5
55
MAX
280
3
25
110
UNITS
µV
µV/°C
nA
nA
V
V
dB
dB
V/mV
V
V
V
3.4
0
84
90
140
4.1
4.0
2.9
3.55
– 0.15
102
110
250
4.25
4.15
3.05
0.004
0.070
0.390
470
0.007
0.085
0.525
650
V
V
V
µA
3
LT1492/LT1493
5V ELECTRICAL CHARACTERISTICS
V
S
= 5V, 0V; V
CM
= 0.5V, V
OUT
= 0.5V, – 40°C
≤
T
A
≤
85°C, unless otherwise noted. (Note 2)
SYMBOL
V
OS
V
OS
∆T
I
OS
I
B
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift (Note 3)
Input Offset Current
Input Bias Current
Input Voltage Range
CMRR
PSRR
A
VOL
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
(Note 4)
V
CM
= 0V to 3.4V
V
S
= 2.5V to 12.5V
V
O
= 0.05V to 3.7V, R
L
= 2k
Output High, No Load
Output High, I
SOURCE
= 1mA
Output High, I
SOURCE
= 15mA
Output Low, No Load
Output Low, I
SINK
= 1mA
Output Low, I
SINK
= 15mA
I
S
Supply Current per Amplifier
CONDITIONS
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
MIN
TYP
150
1
5
55
MAX
325
3
40
130
UNITS
µV
µV/°C
nA
nA
V
V
dB
dB
V/mV
V
V
V
3.4
0
80
90
140
3.95
3.85
2.75
3.5
– 0.1
90
110
220
4.15
4.05
2.95
0.005
0.073
0.400
480
0.008
0.095
0.575
700
V
V
V
µA
±15V
ELECTRICAL CHARACTERISTICS
V
S
=
±15V,
V
CM
= 0V, V
OUT
= 0V, T
A
= 25°C, unless otherwise noted.
SYMBOL
V
OS
I
OS
I
B
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Voltage Range
CMRR
PSRR
A
VOL
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
I
O
SR
GBW
I
S
Maximum Output Current
Slew Rate
Gain-Bandwidth Product
Supply Current per Amplifier
Channel Separation
Minimum Supply Voltage
Full Power Bandwidth
t
S
Settling Time
A
V
= 1, V
O
= 20V
P-P
0.01%, A
V
= 1,
∆V
O
= 10V
V
O
=
±10V,
R
L
= 5k
128
V
CM
= –15V to 13.4V
V
S
=
±2V
to
±16V
V
O
=
±10V,
R
L
= 5k
Output High, I
SOURCE
= 15mA
Output Low, I
SINK
= 15mA
(Note 8)
A
V
= – 2, (Note 5)
f = 100kHz
13.4
– 15.0
86
90
1500
12.9
– 14.4
±20
2
3
CONDITIONS
MIN
TYP
120
5
45
13.6
– 15.2
102
113
6500
13.15
– 14.6
±55
3
5
500
140
±1.4
30
5.8
±2
800
MAX
450
20
100
UNITS
µV
nA
nA
V
V
dB
dB
V/mV
V
V
mA
V/µs
MHz
µA
dB
V
kHz
µs
4
LT1492/LT1493
±15V
ELECTRICAL CHARACTERISTICS
V
S
=
±15V,
V
CM
= 0V, V
OUT
= 0V, 0°C
≤
T
A
≤
70°C, unless otherwise noted.
SYMBOL
V
OS
V
OS
∆T
I
OS
I
B
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift (Note 3)
Input Offset Current
Input Bias Current
Input Voltage Range
CMRR
PSRR
A
VOL
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
I
S
Supply Current per Amplifier
V
CM
= – 15V to 13.4V
V
S
=
±2V
to
±16V
V
O
=
±10V,
R
L
= 5k
Output High, I
SOURCE
= 15mA
Output Low, I
SINK
= 15mA
CONDITIONS
q
q
q
q
q
q
q
q
q
q
q
q
MIN
TYP
160
1
10
55
MAX
550
3
30
120
UNITS
µV
µV/°C
nA
nA
V
V
dB
dB
V/mV
V
V
13.4
– 15.0
84
90
1200
12.7
– 14.2
13.5
– 15.1
101
108
4000
13.0
– 14.6
600
930
µA
V
S
=
±15V,
V
CM
= 0V, V
OUT
= 0V, – 40°C
≤
T
A
≤
85°C, unless otherwise noted. (Note 2)
SYMBOL
V
OS
V
OS
∆T
I
OS
I
B
PARAMETER
Input Offset Voltage
Input Offset Voltage Drift (Note 3)
Input Offset Current
Input Bias Current
Input Voltage Range
CMRR
PSRR
A
VOL
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
I
S
Supply Current per Amplifier
V
CM
= – 15V to 13.4V
V
S
=
±2V
to
±16V
V
O
=
±10V,
R
L
= 5k
Output High, I
SOURCE
= 15mA
Output Low, I
SINK
= 15mA
CONDITIONS
q
q
q
q
q
q
q
q
q
q
q
q
MIN
TYP
180
1
10
55
MAX
650
3
50
150
UNITS
µV
µV/°C
nA
nA
V
V
dB
dB
V/mV
V
V
13.4
– 15.0
82
90
1000
12.5
–14.1
13.45
– 15.05
101
108
3500
12.9
–14.6
620
1000
µA
5
测试/测量
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
